BMW DTC P2449 – AIR System High Air Flow (Bank 2)
DTC P2449 meaning on BMW
DTC P2449 on a BMW indicates a problem with the Secondary Air Injection System, specifically high air flow detected in Bank 2. The Secondary Air Injection System is responsible for reducing emissions by injecting fresh air into the exhaust system during cold engine starts.
BMW DTC P2449 symptoms
Symptoms of DTC P2449 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased fuel consumption
- Engine running rough
BMW DTC P2449 causes
Common causes of DTC P2449 on a BMW include:
- Faulty Secondary Air Injection Pump
- Blocked or leaking air lines
- Malfunctioning Air Injection Control Valve
- Electrical issues in the system
BMW DTC P2449 seriousness
While DTC P2449 may not cause immediate drivability issues, it can lead to increased emissions and potential long-term damage to the engine if left unresolved. It is recommended to address this issue promptly.
How to diagnose DTC P2449 on BMW
To diagnose DTC P2449 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the Secondary Air Injection System components for damage or leaks
- Test the operation of the Secondary Air Injection Pump and Control Valve
- Check the electrical connections and wiring in the system
How to fix DTC P2449 on BMW
To fix DTC P2449 on a BMW, the following steps may be taken:
- Replace the faulty Secondary Air Injection Pump, Control Valve, or other damaged components
- Clean or replace any blocked or leaking air lines in the system
- Repair any electrical issues in the system
- Clear the fault code and reset the Check Engine Light
How to erase DTC P2449 on BMW
To erase DTC P2449 on a BMW, a diagnostic scanner can be used to clear the fault code and reset the Check Engine Light. Once the underlying issue has been addressed and fixed, the code can be cleared to ensure the system is functioning properly.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.